STMicroelectronics STM32G431K8U6TR

Overview

STM32G431K8U6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 MCU with FPU, operating up to 170 MHz (213 DMIPS), featuring 128 KB Flash with ECC, 32 KB SRAM (22 KB + 10 KB CCM), and integrated analog peripherals including dual 12-bit DACs (1 MSPS buffered), dual 16-bit ADCs (0.25 µs conversion), 4 comparators, 3 op-amps, and CORDIC/FMAC math accelerators - deployed in motor control, digital power supplies, and industrial sensing systems.

For engineers reviewing the STM32G431K8U6TR datasheet, STM32G431K8U6TR pinout, STM32G431K8U6TR application, or STM32G431K8U6TR equivalent, key selection criteria include its UFQFPN32 package, 170 MHz real-time performance with ART Accelerator, FDCAN support for flexible data-rate automotive/industrial networks, UCPD interface for USB Type-C™ power delivery, and hardware-accelerated trigonometric filtering for closed-loop control.

Technical Context

The STM32G431K8U6TR implements an Arm Cortex-M4 core with single-precision FPU and MPU, coupled with ST's Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its interconnect matrix routes 14 timers-including two 16-bit advanced motor-control timers with dead-time generation and emergency stop-to peripherals without bus contention.

Analog subsystem integration includes two independent 12-bit DACs (one buffered external, one unbuffered internal), dual 16-bit ADCs with hardware oversampling, and three rail-to-rail op-amps configurable as programmable-gain amplifiers (PGA) with all terminals accessible - supporting high-precision signal conditioning in compact industrial edge nodes.

Key Specifications

Pinout & Package

STM32G431K8U6TR uses the UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32 pins, optimized for thermal performance and board-level density in motor control and digital power applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM-based microcontroller applications.

Compared with STM32G431K6U6TR, the K8 variant adds 64 KB Flash and enhanced security (PCROP, securable memory), while STM32G471KET6 trades compactness for expanded memory and audio capability - making STM32G431K8U6TR optimal for cost-sensitive, space-constrained industrial control with balanced analog/digital integration.

Availability

STM32G431K8U6TR is available at Aetrix Electronics and suitable for industrial motor control, digital power supplies, smart sensor nodes, and USB-C enabled test equipment requiring stable component supply across production lifecycles.

Supply support for STM32G431K8U6TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32G4 series targets high-performance, analog-rich embedded applications - designed specifically for digital power conversion, motor control, and real-time signal processing with hardware math acceleration and robust industrial qualification.

FAQ

What is the maximum operating frequency and associated DMIPS rating of the STM32G431K8U6TR?

The STM32G431K8U6TR operates at up to 170 MHz with an integer performance rating of 213 DMIPS, measured using the Dhrystone 2.1 benchmark. This performance is sustained with zero wait states thanks to the ART Accelerator, even when executing from internal Flash memory - critical for deterministic timing in motor control and digital power applications.

Does the STM32G431K8U6TR support USB Type-C™ Power Delivery negotiation?

Yes - it integrates a dedicated USB Type-C™ and Power Delivery (UCPD) peripheral compliant with USB PD 3.0. The UCPD block handles physical layer signaling, BMC decoding, and PD protocol state machine execution in hardware, enabling autonomous source/sink role negotiation without external PD controllers or firmware overhead.

How many analog-to-digital converter (ADC) channels does the STM32G431K8U6TR support, and what is their resolution and speed?

The device integrates two independent 16-bit ADCs with up to 23 input channels total, capable of 0.25 µs conversion time (up to 4 Msps). Hardware oversampling supports effective resolutions up to 16 bits at lower sampling rates, and both ADCs can be triggered synchronously for phase-matched current/voltage sampling in motor control applications.

What low-power modes are available, and what is the typical current draw in Stop 0 mode?

The STM32G431K8U6TR supports Sleep, Stop 0, Stop 1, Standby, and Shutdown modes. In Stop 0 mode (Flash powered down, RTC and SRAM retained), typical current consumption is 1.9 µA at 25°C with VDD = 3.3 V - enabling ultra-low-power operation in battery-backed sensor nodes while preserving real-time clock and critical context.